:root{--fcm-primary:#6366f1;--fcm-primary-hover:#4f46e5;--fcm-primary-light:#818cf8;--fcm-primary-bg:#6366f114;--fcm-primary-bg-solid:#eef2ff;--fcm-success:#10b981;--fcm-success-bg:#10b9811a;--fcm-warning:#f59e0b;--fcm-warning-bg:#f59e0b1a;--fcm-danger:#ef4444;--fcm-danger-bg:#ef444414;--fcm-text:#1e293b;--fcm-text-secondary:#475569;--fcm-text-muted:#64748b;--fcm-bg:#fff;--fcm-bg-secondary:#f8fafc;--fcm-bg-tertiary:#f1f5f9;--fcm-border:#e2e8f0;--fcm-border-light:#f1f5f9;--fcm-shadow-sm:0 1px 2px #0000000a, 0 1px 4px #00000008;--fcm-shadow:0 2px 6px #0000000f, 0 4px 12px #0000000a;--fcm-shadow-lg:0 4px 12px #00000014, 0 8px 24px #0000000f;--fcm-radius:var(--main-radius,8px);--fcm-radius-lg:var(--main-radius-lg,12px);--fcm-radius-xl:16px}._fcm-container{max-width:900px;margin:0 auto}._fcm-hidden{display:none!important}._fcm-screen{animation:.25s fcmFadeIn}@keyframes fcmFadeIn{0%{opacity:0}to{opacity:1}}._fcm-btn{border-radius:var(--fcm-radius);cursor:pointer;color:var(--fcm-text);white-space:nowrap;background:0 0;border:0 solid #0000;justify-content:center;align-items:center;gap:.375rem;padding:.5rem 1rem;font-size:.8125rem;font-weight:500;line-height:1.4;display:inline-flex}._fcm-btn:hover{opacity:.88}._fcm-btn:disabled{opacity:.5;cursor:not-allowed}._fcm-btn-primary{background:var(--fcm-primary);color:#fff;box-shadow:0 1px 3px #6366f14d}._fcm-btn-primary:hover{background:var(--fcm-primary-hover);opacity:1}._fcm-btn-secondary{background:var(--fcm-bg);border-width:1px;border-color:var(--fcm-border);color:var(--fcm-text-secondary)}._fcm-btn-secondary:hover{background:var(--fcm-bg-secondary);border-color:var(--fcm-primary);color:var(--fcm-primary);opacity:1}._fcm-btn-ghost{color:var(--fcm-text-muted);padding:.375rem .5rem}._fcm-btn-ghost:hover{color:var(--fcm-primary);background:var(--fcm-primary-bg);opacity:1}._fcm-btn-sm{padding:.375rem .75rem;font-size:.8125rem}._fcm-btn-icon{border-radius:var(--fcm-radius);padding:.375rem}._fcm-btn svg{flex-shrink:0}._fcm-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.25rem;display:flex}._fcm-header-actions{align-items:center;gap:.5rem;display:flex}._fcm-stats-bar{flex-wrap:wrap;flex:1;align-items:stretch;gap:.5rem;min-width:0;display:flex}._fcm-stat-item{background:var(--fcm-bg);border-radius:var(--fcm-radius);border-style:solid;border-width:1px;border-color:var(--fcm-border);box-shadow:var(--fcm-shadow-sm);align-items:center;gap:.5rem;padding:.4375rem .75rem;display:flex}._fcm-stat-icon{border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;display:flex}._fcm-stat-icon--primary{background:var(--fcm-primary-bg-solid);color:var(--fcm-primary)}._fcm-stat-icon--success{background:var(--fcm-success-bg);color:var(--fcm-success)}._fcm-stat-icon--warning{background:var(--fcm-warning-bg);color:#b45309}._fcm-stat-icon--fire{color:#ef4444;background:#ef444414}._fcm-stat-text{flex-direction:column;display:flex}._fcm-stat-value{color:var(--fcm-text);font-size:.875rem;font-weight:700;line-height:1.2}._fcm-stat-label{color:var(--fcm-text-muted);text-transform:uppercase;letter-spacing:.03em;font-size:.625rem;font-weight:500;line-height:1.2}._fcm-badge{border-radius:var(--main-radius-full,9999px);align-items:center;padding:.1875rem .5rem;font-size:.6875rem;font-weight:600;line-height:1.4;display:inline-flex}._fcm-badge-primary{background:var(--fcm-primary-bg-solid);color:var(--fcm-primary)}._fcm-badge-success{background:var(--fcm-success-bg);color:var(--fcm-success)}._fcm-badge-warning{background:var(--fcm-warning-bg);color:#b45309}._fcm-badge-danger{background:var(--fcm-danger-bg);color:var(--fcm-danger)}._fcm-empty{text-align:center;color:var(--fcm-text-muted);background:var(--fcm-bg);border-radius:var(--fcm-radius-xl);border-style:solid;border-width:1px;border-color:var(--fcm-border);box-shadow:var(--fcm-shadow-sm);padding:3rem 1.5rem}._fcm-empty-icon{opacity:.35;margin-bottom:.75rem}._fcm-empty-icon svg{width:40px;height:40px}._fcm-empty-title{color:var(--fcm-text);margin-bottom:.375rem;font-size:1rem;font-weight:600}._fcm-empty-text{margin-bottom:1.25rem;font-size:.8125rem}._fcm-progress{background:var(--fcm-bg-tertiary);border-radius:3px;height:5px;overflow:hidden}._fcm-progress-bar{background:var(--fcm-primary);border-radius:3px;height:100%;transition:width .3s}._fcm-progress-bar--success{background:var(--fcm-success)}@media (max-width:768px){._fcm-container{padding-left:1rem;padding-right:1rem}._fcm-header{flex-direction:column;align-items:stretch;gap:.75rem}._fcm-header-actions{justify-content:flex-end}._fcm-stat-item{flex:1;min-width:0;padding:.375rem .625rem}}._fcm-deck-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:.875rem;display:grid}._fcm-deck-card{background:var(--fcm-bg);border-radius:var(--fcm-radius-xl);border-style:solid;border-width:1px;border-color:var(--fcm-border);box-shadow:var(--fcm-shadow-sm);cursor:pointer;padding:1.125rem 1.25rem 1rem;position:relative;overflow:hidden}._fcm-deck-card:before{content:"";background:var(--fcm-deck-color,var(--fcm-primary));height:3px;position:absolute;top:0;left:0;right:0}._fcm-deck-card:hover{box-shadow:var(--fcm-shadow);border-color:var(--fcm-primary)}._fcm-deck-card-header{align-items:flex-start;gap:.5rem;margin-bottom:.625rem;display:flex}._fcm-deck-info{flex:1;min-width:0}._fcm-deck-name{color:var(--fcm-text);text-overflow:ellipsis;white-space:nowrap;margin-bottom:.125rem;font-size:.9375rem;font-weight:600;overflow:hidden}._fcm-deck-desc{color:var(--fcm-text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:.75rem;overflow:hidden}._fcm-deck-actions{align-items:center;gap:.125rem;margin-top:-.125rem;margin-right:-.25rem;display:flex}._fcm-deck-meta{color:var(--fcm-text-muted);align-items:center;gap:.5rem;margin-bottom:.75rem;font-size:.75rem;display:flex}._fcm-deck-due{border-radius:var(--main-radius-full,9999px);background:var(--fcm-primary-bg-solid);color:var(--fcm-primary);align-items:center;gap:.25rem;padding:.125rem .4375rem;font-size:.6875rem;font-weight:600;display:inline-flex}._fcm-deck-footer{align-items:center;gap:.5rem;display:flex}._fcm-deck-footer ._fcm-progress{flex:1}._fcm-deck-mastered{color:var(--fcm-text-muted);white-space:nowrap;font-size:.6875rem;font-weight:500}@media (max-width:640px){._fcm-deck-grid{grid-template-columns:1fr}}._fcm-detail-header{flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:1rem;display:flex}._fcm-back-btn{color:var(--fcm-text-muted);cursor:pointer;background:var(--fcm-bg);border-style:solid;border-width:1px;border-color:var(--fcm-border);border-radius:var(--fcm-radius);box-shadow:var(--fcm-shadow-sm);align-items:center;gap:.25rem;padding:.3125rem .625rem;font-size:.8125rem;font-weight:500;display:inline-flex}._fcm-back-btn:hover{color:var(--fcm-primary);border-color:var(--fcm-primary)}._fcm-detail-title{color:var(--fcm-text);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:1.0625rem;font-weight:700;overflow:hidden}._fcm-detail-badges{align-items:center;gap:.375rem;display:flex}._fcm-detail-toolbar{background:var(--fcm-bg);border-radius:var(--fcm-radius-lg);border-style:solid;border-width:1px;border-color:var(--fcm-border);box-shadow:var(--fcm-shadow-sm);flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:1rem;padding:.625rem .875rem;display:flex}._fcm-detail-toolbar-left{flex:1;align-items:center;gap:.5rem;min-width:0;display:flex}._fcm-detail-toolbar-right{align-items:center;gap:.25rem;display:flex}._fcm-search-input{border-radius:var(--fcm-radius);border-style:solid;border-width:1.5px;border-color:var(--fcm-border);background:var(--fcm-bg-secondary);min-width:140px;max-width:240px;color:var(--fcm-text);outline:none;flex:1;padding:.375rem .625rem .375rem 1.875rem;font-size:.8125rem}._fcm-search-input:focus{border-color:var(--fcm-primary);background:var(--fcm-bg);box-shadow:0 0 0 3px #6366f11a}._fcm-search-wrap{flex:1;min-width:140px;max-width:240px;position:relative}._fcm-search-wrap svg{color:var(--fcm-text-muted);pointer-events:none;position:absolute;top:50%;left:.5rem;transform:translateY(-50%)}._fcm-card-list-table{background:var(--fcm-bg);border-radius:var(--fcm-radius-lg);border-style:solid;border-width:1px;border-color:var(--fcm-border);width:100%;box-shadow:var(--fcm-shadow-sm);overflow:hidden}._fcm-card-row{border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--fcm-border-light);align-items:center;gap:.625rem;padding:.625rem 1rem;display:flex}._fcm-card-row:last-child{border-bottom:none}._fcm-card-row:hover{background:var(--fcm-bg-secondary)}._fcm-card-num{width:22px;color:var(--fcm-text-muted);text-align:center;flex-shrink:0;font-size:.6875rem;font-weight:600}._fcm-card-front,._fcm-card-back-col{min-width:0;color:var(--fcm-text);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:.8125rem;overflow:hidden}._fcm-card-back-col{color:var(--fcm-text-secondary)}._fcm-card-status{text-align:center;flex-shrink:0;width:72px}._fcm-card-row-actions{opacity:0;flex-shrink:0;align-items:center;gap:.125rem;transition:opacity .15s;display:flex}._fcm-card-row:hover ._fcm-card-row-actions{opacity:1}._fcm-card-separator{color:var(--fcm-text-muted);opacity:.5;flex-shrink:0;font-size:.6875rem}._fcm-add-card-form{background:var(--fcm-bg);border-radius:var(--fcm-radius-lg);border-width:1px;border-color:var(--fcm-border);box-shadow:var(--fcm-shadow-sm);border-style:dashed;align-items:center;gap:.5rem;margin-top:.625rem;padding:.75rem 1rem;display:flex}._fcm-add-card-form input{border-radius:var(--fcm-radius);border-style:solid;border-width:1.5px;border-color:var(--fcm-border);background:var(--fcm-bg-secondary);color:var(--fcm-text);outline:none;flex:1;min-width:0;padding:.4375rem .75rem;font-size:.8125rem}._fcm-add-card-form input:focus{border-color:var(--fcm-primary);background:var(--fcm-bg);box-shadow:0 0 0 3px #6366f11a}._fcm-add-card-form input::placeholder{color:var(--fcm-text-muted)}._fcm-history-list{flex-direction:column;gap:0;max-height:400px;display:flex;overflow-y:auto}._fcm-history-row{border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--fcm-border-light);justify-content:space-between;align-items:center;gap:.75rem;padding:.75rem 0;display:flex}._fcm-history-row:last-child{border-bottom:none}._fcm-history-row--latest{background:var(--fcm-primary-bg);border-radius:var(--fcm-radius);margin:-.125rem -.75rem 0;padding:.75rem}._fcm-history-date{color:var(--fcm-text);white-space:nowrap;min-width:120px;font-size:.8125rem;font-weight:500}._fcm-history-stats{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:.375rem;display:flex}@media (max-width:768px){._fcm-detail-toolbar{flex-direction:column;align-items:stretch;padding:.5rem .75rem}._fcm-detail-toolbar-left{flex-wrap:wrap}._fcm-search-wrap{max-width:100%}._fcm-detail-toolbar-right{justify-content:flex-end}._fcm-card-status,._fcm-card-num{display:none}._fcm-card-row-actions{opacity:1}._fcm-add-card-form{flex-direction:column}._fcm-add-card-form input{width:100%}}._fcm-study-header{align-items:center;gap:.75rem;margin-bottom:1.5rem;display:flex}._fcm-study-progress-wrap{flex:1;min-width:0}._fcm-study-progress-text{color:var(--fcm-text-muted);justify-content:space-between;align-items:center;margin-bottom:.375rem;font-size:.8125rem;display:flex}._fcm-study-progress-count{color:var(--fcm-text);font-size:.875rem;font-weight:700}._fcm-study-area{justify-content:center;align-items:center;min-height:340px;margin-bottom:1.5rem;padding:0 1rem;display:flex}._fcm-study-controls{flex-wrap:wrap;justify-content:center;align-items:stretch;gap:.625rem;display:flex}._fcm-rating-btn{border-radius:var(--fcm-radius-lg);cursor:pointer;border-style:solid;border-width:0;flex-direction:column;align-items:center;gap:.375rem;min-width:100px;padding:.875rem 1.5rem;font-size:.875rem;font-weight:600;transition:box-shadow .15s;display:flex}._fcm-rating-btn:hover{box-shadow:var(--fcm-shadow)}._fcm-rating-again{background:var(--fcm-danger-bg);color:var(--fcm-danger)}._fcm-rating-again:hover{box-shadow:0 2px 8px #ef444433}._fcm-rating-hard{background:var(--fcm-warning-bg);color:#b45309}._fcm-rating-hard:hover{box-shadow:0 2px 8px #f59e0b33}._fcm-rating-good{background:var(--fcm-success-bg);color:var(--fcm-success)}._fcm-rating-good:hover{box-shadow:0 2px 8px #10b98133}._fcm-rating-easy{background:var(--fcm-primary-bg-solid);color:var(--fcm-primary)}._fcm-rating-easy:hover{box-shadow:0 2px 8px #6366f133}._fcm-key-badge{width:20px;height:20px;color:inherit;opacity:.6;background:#fff9;border:1px solid #0000000f;border-radius:4px;justify-content:center;align-items:center;font-size:.625rem;font-weight:700;display:inline-flex}._fcm-study-summary{text-align:center;background:var(--fcm-bg);border-radius:var(--fcm-radius-xl);border-style:solid;border-width:1px;border-color:var(--fcm-border);box-shadow:var(--fcm-shadow);padding:2.5rem 1.5rem}._fcm-summary-icon{color:var(--fcm-primary);justify-content:center;align-items:center;margin-bottom:1rem;display:flex}._fcm-summary-icon svg{width:40px;height:40px}._fcm-summary-title{color:var(--fcm-text);margin-bottom:.375rem;font-size:1.25rem;font-weight:700}._fcm-summary-text{color:var(--fcm-text-secondary);margin-bottom:1.5rem;font-size:.875rem}._fcm-summary-stats{justify-content:center;align-items:center;gap:2.5rem;margin-bottom:1.75rem;display:flex}._fcm-summary-stat{text-align:center}._fcm-summary-stat-value{color:var(--fcm-primary);font-size:1.75rem;font-weight:800;line-height:1.2}._fcm-summary-stat-label{color:var(--fcm-text-muted);margin-top:.25rem;font-size:.75rem}._fcm-summary-actions{justify-content:center;align-items:center;gap:.75rem;display:flex}._fcm-study-mode-options{flex-direction:column;gap:.5rem;padding:.25rem 0;display:flex}._fcm-study-mode-option{border-radius:var(--fcm-radius-lg);border-style:solid;border-width:1.5px;border-color:var(--fcm-border);cursor:pointer;background:var(--fcm-bg);align-items:center;gap:.75rem;padding:.875rem 1rem;display:flex}._fcm-study-mode-option:hover{border-color:var(--fcm-primary);background:var(--fcm-primary-bg);box-shadow:0 0 0 3px #6366f10f}._fcm-study-mode-icon{border-radius:var(--fcm-radius);background:var(--fcm-primary-bg-solid);width:38px;height:38px;color:var(--fcm-primary);flex-shrink:0;justify-content:center;align-items:center;display:flex}._fcm-study-mode-info{flex:1;min-width:0}._fcm-study-mode-name{color:var(--fcm-text);font-size:.875rem;font-weight:600}._fcm-study-mode-desc{color:var(--fcm-text-muted);margin-top:.125rem;font-size:.75rem}@media (max-width:640px){._fcm-study-area{min-height:280px;padding:0}._fcm-rating-btn{min-width:72px;padding:.75rem .875rem;font-size:.8125rem}._fcm-summary-stats{gap:1.5rem}._fcm-study-summary{padding:2rem 1rem}}._fcm-flashcard{perspective:1200px;cursor:pointer;width:100%;max-width:480px;min-height:300px}._fcm-flashcard-inner{width:100%;min-height:300px;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.4,0,.2,1);position:relative}._fcm-flashcard.is-flipped ._fcm-flashcard-inner{transform:rotateY(180deg)}._fcm-flashcard-front,._fcm-flashcard-back{-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:var(--fcm-radius-xl);border-style:solid;border-width:1px;border-color:var(--fcm-border);box-shadow:var(--fcm-shadow-lg);background:var(--fcm-bg);text-align:center;word-break:break-word;flex-direction:column;justify-content:center;align-items:center;padding:2.5rem 2rem;display:flex;position:absolute;top:0;bottom:0;left:0;right:0;overflow-y:auto}._fcm-flashcard-front{z-index:2}._fcm-flashcard-back{border-top-width:3px;border-top-color:var(--fcm-primary);transform:rotateY(180deg)}._fcm-flashcard-label{text-transform:uppercase;letter-spacing:.08em;border-radius:var(--main-radius-full,9999px);background:var(--fcm-bg-tertiary);color:var(--fcm-text-muted);padding:.125rem .5rem;font-size:.625rem;font-weight:700;position:absolute;top:1rem;left:1.25rem}._fcm-flashcard-back ._fcm-flashcard-label{background:var(--fcm-primary-bg-solid);color:var(--fcm-primary)}._fcm-flashcard-text{color:var(--fcm-text);font-size:1.375rem;font-weight:600;line-height:1.5}._fcm-flashcard-hint{color:var(--fcm-text-muted);opacity:.7;font-size:.6875rem;position:absolute;bottom:1rem}@media (max-width:640px){._fcm-flashcard{max-width:100%;min-height:240px}._fcm-flashcard-inner{min-height:240px}._fcm-flashcard-text{font-size:1.125rem}._fcm-flashcard-front,._fcm-flashcard-back{padding:2rem 1.25rem}}